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CMyWindow: public CWindowImpl<cmywindow>
{
BEGIN_MSG_MAP(CMyWindow)
MESSAGE_HANDLER(WM_PAINT, OnPaint)
END_MSG_MAP()
LRESULT OnPaint(...)
{
// do some drawing here
}
};
CMyControl: ...(ignore for brief) , public ComControl<cmycontrol>
{
...(ignore for brief)
LRESULT OnCreate(...)
{
// create m_wndClient here
}
LRESULT OnDraw(...)
{
// do useless drawing here just for test
}
private:
CMyWindow m_wndClient;
}
something wiered happened when the first time i clicked the control window, m_wndClient window didn't show up correctly,
it just show me those things done in OnDraw, why?
it just happened at the first time when i click .
i.e
LRESULT CMyControl:OnDraw(...)
{
.
.
.
TextOut(_T("MyControl")); //pseudocode
.
.
.
}
LRESULT CMyWindow:OnPaint()
{
.
.
.
TextOut(_T("MyWindow")); //pseudocode
.
.
.
}
run the simplest program , everything appears to be ok,
it just show "MyWindow"( because m_wndClient occupies all the space of the control)
but when i click in the control, it shows "MyControl" instead,
i have to resize the window or do other operations to trig the OnPaint event handler in MyWindow to let the control refresh itself. it just happens at the first time i click it, can anyone tell me why?
how can i avoid it?
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What is the difference between .sln and .vcproj? What do they do?
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Basically, a solution can contain multiple projects, and a vcproj is a single (C++, I think) project. A csproj is a C# project.
Whenever you create a new project, it will put it in a solution if one does not exist. In terms of the old versions of C++, sln == dsw and vcproj == dsp.
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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I have a child window which ignores OnEraseBkgnd() and just draws it's content so it appears to belong to it's parent not be it's own object. Everything works fine, however because I don't FillSolidRect() with any particular color I need to fill the background with whatever it's parent background is. The solution I have chosen is to make a bitmapped copy of the control during OnSize() and blit this to screen during OnPaint().
How do I make a bitmap from an object, but that object doesn't actually draw anything i'm relying on the DC seeing exatly what I see. Is this true? or will I get a blank bitmap...?
Is what i'm asking even making sense 
Basically I wanna avoid doing ClientToScreen() and use the childs background as the bitmap.
I'm drinking triples, seeing double and acting single 
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Hi,
How does one change the font color in a rich edit control, which is updatedat regular time intervals.
Thanks.
Deepak Samuel.
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Hi Deepak,
The following code will change the textcolor for the entire contents of the richedit to basically random stuff. I wrote it as the onTimer handler in a RichEditView. I'm not sure if this is what you meant but maybe it will help.
It is a pretty crazy code and it flickers alot when I tried it but maybe it will help.
<br />
void CColorsView::OnTimer(UINT nIDEvent) <br />
{<br />
if(nIDEvent == 1){
CRichEditCtrl& r = this->GetRichEditCtrl();<br />
<br />
CHARRANGE cr;<br />
r.GetSel(cr);<br />
<br />
r.SetSel(0,-1);<br />
<br />
CHARFORMAT cf;<br />
r.GetSelectionCharFormat(cf);<br />
<br />
cf.crTextColor = RGB((GetRValue(cf.crTextColor)-5),(GetGValue(cf.crTextColor)+8),(GetBValue(cf.crTextColor)+17));<br />
cf.dwEffects = cf.dwEffects & ~CFE_AUTOCOLOR;<br />
r.SetSelectionCharFormat(cf);<br />
<br />
r.SetSel(cr);<br />
}<br />
CRichEditView::OnTimer(nIDEvent);<br />
}<br />
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I'm using Visual C++ 6.0 SP5
I create a new MFC Appwizard project, I choose SDI with doc/view architecture support, then I leave everything at the defaults until it asks me How do you want your toolbars to look? and I choose Internet Explorer Rebars then finish.
Next I enter the Project menu and choose Add to project then Components and Controls. This opens up the Components and Controls Gallery. In there I pick the Registered ActiveX Controls folder and find the Microsoft Multimedia Control (for me it is version 6.0) and insert it leaving all the options at their defaults.
In the resource editor under dialogs I edit the IDR_MAINFRAME dialog and add the multimedia control to it from my controls palette. I double click my newly created multimedia control and Classwizard pops up with a message saying IDR_MAINFRAME is a new resource... do you want to add a class for it? and I choose select an existing class and choose CMainFrame. Now I close Classwizard and go back to the resource editor and right click my multimedia control and choose events to add the OnPlayClick event handler. It prompts me for the name of the event handler and I just leave it as the default OnPlayClickMmcontrol1. Then in the code for the event handler I just put something simple to test out the button like AfxMessageBox("bleah");
Next I edit the end of the CMainFrame::OnCreate function like so in order to initialize the multimedia control (this assumes you have c:\windows\media\ding.wav available):
<br />
...<br />
...<br />
Cmci* mci = (Cmci*) m_wndDlgBar.GetDlgItem(IDC_MMCONTROL1);<br />
<br />
mci->SetFileName("c:\\windows\\media\\ding.wav");<br />
mci->SetCommand("Open");<br />
<br />
return 0;<br />
I also include the multimedia control header in mainfrm.cpp like so to satisfy the compiler
<br />
#include "mci.h"<br />
I run the program and the multimedia control works except the OnPlayClick event handler doesn't seem to get called.
If I do the same idea but with a dialog based program instead of SDI then it will work normally. I think for some reason the activeX control won't deliver events when it is on the dialogbar but I can't fathom why.
anybody know why?
I am stumped...
Any ideas are appreciated.
-Oinka
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Has the function AfxOleInit() been called somewhere in your codes?
Sonork 100.41263:Anthony_Yio
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Hi Anthony,
no that function is not called anywhere in the project.
Is it needed? I can't find any documentation about it other than what I found in msdn:
Remarks
Initializes the OLE DLLs.
MSDN you suck!
anyways, I tried adding a call to AfxOleInit() but all it did was make an assertion fail. When I looked into this I found out that it was checking to see if AfxOleInit() has been called twice. So even though the function call doesn't appear in any of MY code, the framework seems to have called the function for me behind the scenes.
See Ask Dr. GUI #57[^]
so yeah I still can't figure out how to get the event handler to work.
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The control will send the notification to it's parent window (the dialog bar).
You could put a trace for it in the dlg bar's PreTranslateMessage, just to check what's happening, or use SPY++ to spy on the dialog bar.
Steve S
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Hey Steve,
With your help I finally got this damn thing to work 
Since the CDialogBar class (the one that was created in the OnCreate method of the CMainFrame class) was getting my messages I replaced it with a class of my own derived from CDialogBar and added my message map and eventsink map and it works now.
Here's an even harder question: why in the hell did microsoft make me jump through that many hoops just to use a bloody activeX control in a toolbar? Isn't there an easier way?
thanks,
-Oinka
Microsft Sucks!
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Hello Gurus,
Does anyone know how to link multiple Access tables programmatically. Tables are located in 2 different databases.
I am using VC++ 6.0 / MFC.
Thanks,
Dmitry
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In what way do you need them linked?
You could try creating temporary tables to store fields from both databases.
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I need to link the tables in order to run an update query on one database.
I am writing a tool that allows a user to set up mappings (fields in database1 map to fields in database2 based on certain conditions). The tool then creates an update query that joins tables from both databases and updates certain fields in database1. Since the tool may be run on different databases, I do not know in advance which tables will have to be linked.
Thanks.
Make things as simple as possible, but no simpler. -- Albert Einstein
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Hi,
Does anyone know a good tutorial on keyboard accels, or does anyone want to give sime kind of lesson about it (like a checklist or something).
My problem is like this:
I have an app wich shows pictures, this works.
But every time a user presses the right-arrow button, the app needs to show a new picture (this is done by calling showNextPicture()).
I've already build showNextPicture(), but I can't build the link between the key and the function.
PS I'm using a dialog based app, with MFC support
Thanks for reading this!
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Look at PreTranslateMessage() and TranslateMessage() in your docs. It will point you to where you can determine what key was pressed and from there what handler to call.
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OK, I've read it,
But Is still don't understand what exactly I've got to do with those messages etc. can you explain that to me?
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Add a menu option like ID_SHOW_NEXT, make this call your function, then map the arrow key to your menu option in the accelerator resource.
Steve S
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Hi there,
I've downloaded a tutorial from thecodeproject about tcp servers, and it contains the following code:
int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])<br />
{<br />
int nRetCode = 0; <br />
<br />
cout << "Press ESCAPE to terminate program\r\n";<br />
AfxBeginThread(ServerThread,0);<br />
while(_getch()!=27);<br />
<br />
return nRetCode;<br />
}
and this
<br />
UINT ServerThread(LPVOID pParam)<br />
{<br />
return 0;<br />
}<br />
I've copied the code into a neat console app with mfc functionality, but this isn't compiling.
How is this possible?
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Do I hvae to define ServerThread before it's call (I'm not used to that)?
I'll try it, and if it works thank you a lot!!!
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BoudewijnEctor wrote:
Do I hvae to define ServerThread before it's call (I'm not used to that)?
No, but you do have to declare it.
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?
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Firstly, I am sorry if this is in the wrong area but I am looking for a way to create an ActiveX control that I can include in my ASP page for using MS's TemplatePrinter functionality. Here is the site at MSDN
I need to call IOleCommandTarget:Exec, but I'm confused on how to set this up. Does anyone have experience with this?
Thanks,
Nate
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Hi
I am getting this error on making a diaolag box.
Actually i am making a tab control and i just designed a few boxes and i received this error. I have started over and over again but again i get this error . please help me on how do i get rid of this kind of error.
HC1002: Note:
Using existing phrase table: Gui.ph
HC3025: Warning: topic #1 of C:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "menu_record".
HC3025: Warning: topic #3 of C:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "HID_OLE_EDIT_LINKS".
HC3025: Warning: topic #3 of C:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "HID_EDIT_PASTE_LINK".
HC3025: Warning: topic #3 of CC:\Program Files\Microsoft Visual Studio\MyProjects\SidsteUdkald\hlp\.\afxcore.rtf
Jump to undefined Topic ID: "HID_OLE_INSERT_NEW".
HC1010: Note:
The following mapped Topic IDs were not used in any topic:
AFX_HIDP_UNREG_DONE
AFX_HIDP_GET_NOT_SUPPORTED
HID_HT_OBJECT
.
.
.
.
and it continues to a long listtttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt.
Thanks in advance.
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It's from the help compiler. Are you making a help file? If not, you can just remove the dependency from your application.
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?
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